Why do I get this error depending on the function name?

[sanghyuckNa]

### unit_test.py ###

def test(x):
    return x + 1

def test_answer():
    assert test(3) == 4

$ pytest unit_test.py

----------------------------------------------------------------------------------
collected 2 items

  def test(x):
E       fixture 'x' not found

1 passed, 1 error

### other code ###
def func(x):
    return x + 1

def test_answer():
    assert func(3) == 4

collected 1 items

 1 passed

I don't understand.

only function name is different. but result is different.

[Zac-HD]

In your first example, pytest collects the function named test as a test function and then errors because it has an argument named x but there is no corresponding fixture. In the second example, func is not collected as a test.